Basic information Safety Supplier Related

7-Anilino-4-hydroxy-2-naphthalenesulfonic acid

Basic information Safety Supplier Related

7-Anilino-4-hydroxy-2-naphthalenesulfonic acid Basic information

Product Name:
7-Anilino-4-hydroxy-2-naphthalenesulfonic acid
Synonyms:
  • 7-(phenylamino)-4-naphthol-2-sulfonic acid
  • 2-(N-Phenylamino)-5-naphthol-7-sulfonic acid
  • 1-Hydroxy-6-phenylamino-3-naphthalenesulfonic acid
  • 2-Anilino-5-naphthol-7-sulfonicacid
  • 2-Phenylamino-5-naphthol-7-sulfonicacid
  • N-Phenyl-J-acid
  • N-PhenylJ-acid
  • PHENYL J ACID
CAS:
119-40-4
MF:
C16H13NO4S
MW:
315.34
EINECS:
204-320-3
Product Categories:
  • Intermediates of Dyes and Pigments
Mol File:
119-40-4.mol
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7-Anilino-4-hydroxy-2-naphthalenesulfonic acid Chemical Properties

Density 
1.495±0.06 g/cm3(Predicted)
pka
-0.18±0.40(Predicted)
form 
powder to crystal
color 
White to Gray to Brown
Water Solubility 
587.97mg/L at 25℃
LogP
0.83
CAS DataBase Reference
119-40-4(CAS DataBase Reference)
EPA Substance Registry System
4-Hydroxy-7-(phenylamino)-2-naphthalenesulfonic acid (119-40-4)
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Safety Information

Safety Statements 
22-24/25
HS Code 
2922.29.8190
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7-Anilino-4-hydroxy-2-naphthalenesulfonic acid Usage And Synthesis

Chemical Properties

Blue-gray crystals. Soluble in alkali, insoluble in organic solvent. 4-Hydroxy-7-phenylaminonaphthalene-2- sulfonic acid [119-40-4] N-phenyl J acid, is produced by reaction of J acid with aniline in aqueous sodium bisulfite at reflux for 40 h (yield 85 %). It is used to produce C.I. Direct Violet 7, C.I. Direct Violet 9, C.I. Direct Violet 51, C.I. Direct Blue 78, and C.I. Direct Blue 168.

Uses

7-Anilino-4-hydroxy-2-naphthalenesulfonic acid is a dye intermediate, which is used to synthesize azo dyes such as direct copper salt green BTL, copper salt blue FBGL and copper salt purple BBL.

Flammability and Explosibility

Non flammable

Synthesis

7-Anilino-4-hydroxy-2-naphthalenesulfonic acid was synthesized from the condensation of J acid and aniline in the medium of sodium bisulfite.

7-Anilino-4-hydroxy-2-naphthalenesulfonic acid Preparation Products And Raw materials

Raw materials

Sodium chlorideSulfur dioxideCongo red paper

Preparation Products

DIRECT VIOLET 51disodium 3-[[4'-[[6-amino-1-hydroxy-3-sulphonato-2-naphthyl]azo]-3,3'-dimethoxy[1,1'-biphenyl]-4-yl]azo]-4-hydroxynaphthalene-1-sulphonate Direct Bordeaux NGBDirect Violet 9Direct Blue 78trisodium 4-hydroxy-5-[[4-[[1-hydroxy-6-(phenylamino)-3-sulphonato-2-naphthyl]azo]-5-methoxy-2-methylphenyl]azo]naphthalene-2,7-disulphonate

7-Anilino-4-hydroxy-2-naphthalenesulfonic acidSupplier

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